Investment Securities (Summary Of Securities With Gross Unrealized Losses And Their Fair Values) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014 security	Dec. 31, 2013 security
Available-for-sale Securities and Held-to-maturity Securities
Number of Securities, Available for Sale	68	108
Amortized cost of securities with unrealized losses, Available for Sale	$ 157,378	$ 261,473
Continuous Unrealized Loss Existing for Less Than 12 Months, Available for Sale	(2,206)	(6,048)
Continuous Unrealized Loss Existing for More Than 12 Months, Available for Sale	(959)	(276)
Fair value of securities with unrealized losses, Available for Sale	154,213	255,149
Federal Agency Securities [Member]
Available-for-sale Securities and Held-to-maturity Securities
Number of Securities, Available for Sale	15	24
Amortized cost of securities with unrealized losses, Available for Sale	66,999	87,921
Continuous Unrealized Loss Existing for Less Than 12 Months, Available for Sale	(798)	(2,885)
Continuous Unrealized Loss Existing for More Than 12 Months, Available for Sale	(466)	(4)
Fair value of securities with unrealized losses, Available for Sale	65,735	85,032
Obligations Of State And Political Subdivisions [Member]
Available-for-sale Securities and Held-to-maturity Securities
Number of Securities, Available for Sale	10	20
Amortized cost of securities with unrealized losses, Available for Sale	15,182	31,579
Continuous Unrealized Loss Existing for Less Than 12 Months, Available for Sale	(96)	(887)
Continuous Unrealized Loss Existing for More Than 12 Months, Available for Sale	(166)	(198)
Fair value of securities with unrealized losses, Available for Sale	14,920	30,494
Residential Mortgage-Backed Securities [Member]
Available-for-sale Securities and Held-to-maturity Securities
Number of Securities, Available for Sale	39	53
Amortized cost of securities with unrealized losses, Available for Sale	63,596	104,667
Continuous Unrealized Loss Existing for Less Than 12 Months, Available for Sale	(1,236)	(2,015)
Continuous Unrealized Loss Existing for More Than 12 Months, Available for Sale	(327)	(74)
Fair value of securities with unrealized losses, Available for Sale	62,033	102,578
Asset-Backed Securities [Member]
Available-for-sale Securities and Held-to-maturity Securities
Number of Securities, Available for Sale	3	3
Amortized cost of securities with unrealized losses, Available for Sale	9,601	9,578
Continuous Unrealized Loss Existing for Less Than 12 Months, Available for Sale	(46)	(96)
Fair value of securities with unrealized losses, Available for Sale	9,555	9,482
Other Securities [Member]
Available-for-sale Securities and Held-to-maturity Securities
Number of Securities, Available for Sale	1	8
Amortized cost of securities with unrealized losses, Available for Sale	2,000	27,728
Continuous Unrealized Loss Existing for Less Than 12 Months, Available for Sale	(30)	(165)
Fair value of securities with unrealized losses, Available for Sale	$ 1,970	$ 27,563